platynik platynik
  • Just popping in
  • Just popping in
  • Joined: 19/12 11:57
  • Group: Registered Users
  • Posts: 10
  • Posted on: 25/2 12:13
Male platy hounding brother #1
I have a male platy tank with a few males and fry of different stages.

The trouble I have is with the two four month old males, they are brothers from the same batch. The issue is that one hounds the other one so badly, he follows him, blocks him, displays at him, nips hims and the other one rams and flicks him back, but it’s relentless! And actually uncomfortable to watch!

The one that’s being bothered is now like 2 or 3 times the size of the other one as the other one spends his time and energy stalking his brother, while his brother eats and grazes all day.

The hounded one does seem stressed and keeps getting a bloated stomach (not dropsy, no pineconing) the bloat goes down if I don’t feed them, the back again.

Thinking it might be stress.

I have tried putting the pest male in breaded net for an hour but that had no effect other than stress, so won’t be doing that again.


Any advice on this behaviour would be great otherwise might need to put in a tank divider.

I have a 65ltr female tank but rally don’t want any males in there as just trying to get on top of the population.

Water stats are good
Ammonia 0
Nitrite 0
Nitrate 5
PH 7.2
KH & GH are always low so adding in coral sand



60ltr tank
Fluval U2
Plenn and plax small world filter
Ocean rock
Couple of plants
Coconut half for shrimp

Stock
1 full grown male
2 five month old males - one hounds the other
1 four month old
6 two month old fry - all free swim around the tank
2 one month only fry - swim in tank
4 Amano Shrimp

Food
Spirulina flakes
Bug bites
Aquarian fish flakes
Frozen garlic brine shrimp

Used to put in shrimp pellets but the fish steel them so no point
Fishlady Fishlady
  • Tropical Moderator
  • Tropical Moderator
  • Joined: 6/7/2010 18:26
  • From Worcestershire
  • Group: Moderators Image Admin Caresheets FK Supporter Registered Users Advisers
  • Posts: 12943
  • Posted on: 25/2 14:23
Re: Male platy hounding brother #2
Try putting the culprit in the net for 24 hours and rearranging the tank decor before you let him out. Other than that, rehoming him might be best.
platynik platynik
  • Just popping in
  • Just popping in
  • Joined: 19/12 11:57
  • Group: Registered Users
  • Posts: 10
  • Posted on: 25/2 14:38
Re: Male platy hounding brother #3
Thanks, I could try a bigger net this time and for longer.

Like you say if it has no effect, I'll need to try and re home him and that would be a real shame, but he's the only one breaching the peace.

I'll try the fish version of jail before going down this avenue.

Tricky to rehome though.
platynik platynik
  • Just popping in
  • Just popping in
  • Joined: 19/12 11:57
  • Group: Registered Users
  • Posts: 10
  • Posted on: 26/2 8:01
Re: Male platy hounding brother #4
Any advice for the bloat.

It goes down by the morning, however bloats right back up again after eating.

Epsom salt bath?
Fishlady Fishlady
  • Tropical Moderator
  • Tropical Moderator
  • Joined: 6/7/2010 18:26
  • From Worcestershire
  • Group: Moderators Image Admin Caresheets FK Supporter Registered Users Advisers
  • Posts: 12943
  • Posted on: 26/2 14:46
Re: Male platy hounding brother #5
Epsom salt isn't likely to help as this sounds to be food-related rather than an osmotic stress issue (it wouldn't go up and down if he was taking on water). Try giving them some de-skinned squished peas or some live daphnia which will help digestion.
platynik platynik
  • Just popping in
  • Just popping in
  • Joined: 19/12 11:57
  • Group: Registered Users
  • Posts: 10
  • Posted on: 26/2 15:15
Re: Male platy hounding brother #6
Ok thanks will give that a try.